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| author | Roger Sayle <roger@eyesopen.com> | 2006-03-28 17:55:26 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2006-03-28 17:55:26 +0000 |
| commit | dd2c62dcb685f9de4d53cd8c6e656e358754589a (patch) | |
| tree | 1b476f274da069b822455449eb6034e17e14926c /gcc/ChangeLog | |
| parent | 3cc82eea2bfea5681e8374a85794102b68bdd4be (diff) | |
| download | gcc-dd2c62dcb685f9de4d53cd8c6e656e358754589a.zip gcc-dd2c62dcb685f9de4d53cd8c6e656e358754589a.tar.gz gcc-dd2c62dcb685f9de4d53cd8c6e656e358754589a.tar.bz2 | |
fold-const.c (fold_binary): Fold (X & Y) ^ Y as the equivalent ~X & Y, and the symmetry related transformations.
* fold-const.c (fold_binary) <BIT_XOR_EXPR>: Fold (X & Y) ^ Y as
the equivalent ~X & Y, and the symmetry related transformations.
(fold_binary) <BIT_AND_EXPR>: Similarly, fold (X ^ Y) & Y as
~X & Y, and symmetry related transforms.
* gcc.dg/fold-andxor-1.c: New test case.
* gcc.dg/fold-xorand-1.c: Likewise.
From-SVN: r112459
Diffstat (limited to 'gcc/ChangeLog')
| -rw-r--r-- | gcc/ChangeLog | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 12d43d4..17f1e2e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2006-03-28 Roger Sayle <roger@eyesopen.com> + + * fold-const.c (fold_binary) <BIT_XOR_EXPR>: Fold (X & Y) ^ Y as + the equivalent ~X & Y, and the symmetry related transformations. + (fold_binary) <BIT_AND_EXPR>: Similarly, fold (X ^ Y) & Y as + ~X & Y, and symmetry related transforms. + 2006-03-28 Maxim Kuvyrkov <mkuvyrkov@ispras.ru> Revert my 2006-03-27 patches. |